2. Syntax

/fashion_gene
/Fashion_meca_c
/meca_mode = EXTR_MODE (
    ◆ FILTRE_MODE = _F (
         ◆ MODE = mode_gene/mode_meca_c/mode_meca,
         ◆/TOUT_ORDRE =/"OUI ",
                          /"NON ",
           /NUME_ORDRE = int,
           /NUME_MODE = int,
           /NUME_MODE_EXCLU = int,
           /FREQ_MIN = float,
           /CRIT_EXTR =/"MASS_EFFE_UN ",
                         /"MASS_GENE ",
                         /"MASS_EFFE ",
         # If: exists (" FREQ_MIN ")
             ◆ FREQ_MAX = float,
             ◇ PRECISION = float (default: 0.001),
         # If: exists (" CRIT_EXTR ")
             ◆ | THRESHOLD = float,
               | THRESHOLD_X = float,
               | THRESHOLD_Y = float,
               | Z-THRESHOLD = float,
      ),
    ◇ TITRE = text,
    ◇ IMPRESSION = _F (
         ◇ CUMUL =/"OUI ",
                   /"NON" (by default),
         ◇ CRIT_EXTR =/"MASS_EFFE_UN" (by default),
                       /"MASS_GENE ",
                       /"MASS_EFFE ",
      ),
)

◆: mandatory
◇: optional
: present by default
&: together
/: only one among
|: several possible choices